Unopened and unused, kept as a spare. 10-inch, blue, set of 2. I think it's difficult to obtain even used ones. It can be stored in a bag with a laptop, relieving stress when carrying it around. Feel free to ask any questions in the comments! Features: The compact 10" size, almost the same size as a laptop, is convenient for carrying around. It's the perfect size to always keep in your backpack as a backup! Dedicated records for running Scratch Live / Serato DJ (Serato DVS). 10-inch size, set of 2. Replace them if the grooves of the control records are worn out and you feel the sound quality deteriorate or hear noise. ・Serato DJ Pro / Scratch Live control tone recorded on both sides Side A - 7min with Vinyl Scroll (33RPM) Side B - 10min (33RPM) ・Serato control tone version 2.5 adopted ・10-inch set of 2